A global damage index for a high-rise concrete TV tower based on the incremental dynamic analysis

被引：0
|
作者：
Qiu Y. [1 ]
Zhen W. [1 ]
Zhou C. [2 ]
机构：
[1] Beijing Institute of Architectural Design, Beijing
[2] School of Civil Engineering, Beijing Jiaotong University, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 08期
关键词：
area under curves; damage evolution curves; global damage index; high-rise RC TV structures; incremental dynamic analysis(IDA);
D O I：
10.13465/j.cnki.jvs.2023.08.012
中图分类号：
学科分类号：
摘要：
Due to the lack of multi-seismic defense lines, high-rise concrete TV tower structures are easy to be damaged under earthquake. Evaluation of the damage state of the structures after earthquake is of great significance to evaluate the seismic performance and recoverability of the structures after earthquake. In this paper, a new global damage model, defined by the ratio of the area enclosed by the incremental dynamic analysis (IDA) curves, based on the incremental dynamic analysis IDA method was proposed. The principle of structural damage state and the selection method of ground motion intensity measure were introduced, and it was proved that the overall damage value proposed in this paper increases monotonously with ground motion intensity measure. Taking the Beijing CCTV Tower as an object, the applicability of the damage model and other damage models to the structure of high-rise concrete TV tower was studied. Results show that the model proposed in this paper solves the problem of local decline of damage evolution curves of other models. In addition, the shape characteristics of damage evolution curves of this model are more consistent with the brittle failure characteristics of the TV tower structure. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：111 / 118
页数：7
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